Home / 623,715.40-860,631.78-351,771.40

Finding the Fourth Proportional to 623,715.40, 860,631.78 and 351,771.40

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Solution

The fourth proportional to 623,715.40, 860,631.78 and 351,771.40 is: 485,390.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,715.40 : 860,631.78 = 351,771.40 : x
  2. Step 2: Convert to fraction form
    623,715.40/860,631.78 = 351,771.40/x
  3. Step 3: Cross multiply
    623,715.40x = 860,631.78 × 351,771.40
  4. Step 4: Simplify right side
    623,715.40x = 302,745,646,135.09
  5. Step 5: Solve for x
    x = 302,745,646,135.09/623,715.40
  6. Step 6: Final answer
    x = 485,390.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.